How often are these titles changing?

More titles are added each day, but I re-analyze the data once a month.

How important is it to get "this article belongs to this cluster" right?

It is important, every failure in the process is a bug in the system.

How "tight" are the clusters - these articles all talk about social networking sites vs these articles all have to do with lawsuits against Facebook?

All are articles describing the analysis of metagenomic samples (samples that contains many bacterial species), i.e. where the samples were collected (geographical place), how the sample was treated, what results did they obtained...

A couple of title examples:

1 "Comparative analysis of bacterial communities passing through the g
+uts of three earthworm species with rRNA-based techniques"
2 "Prokaryotic Diversity of An Inland Salt Habitat Investigated by usi
+ng Two Different Molecular Approaches"
3 "High diversity of fungi recovered from the roots of mature tanoak (
+Lithocarpus densiflorus) in northern California"

[download]

Thanks for your interest and help

citromatik

In reply to Re^2: Cluster a big bunch of strings by citromatik
in thread Cluster a big bunch of strings by citromatik

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.